I am planning to this by spring. http://www.100share.com/Need-The-Perfect-Engine-W.htm Buy this 383 with ported slp runners , phelum, intake. intake will be stock and just ported and match. it will have 24 lbs injectors. and tuned. I will be replace my 305 tpi. I will rebuild my 5 speed tranny with this combo and diff.


The Big question is... will this engine bolt right in my engine bay and will my intake bolt on? Will my tranny bolt on? I just want to make sure before I place the order.

Thanks for your help.

 

The engine should be an easy bolt-in piece.

The intake depends on the bolt pattern of the center two bolts of the heads. As far as I know they changed in 87.

The transmission bellhousing is the same as both blocks are Gen I Chevy SBCs so your current tranny should bolt on without any problem.

 

If that is all you want to know...yeah, you're good but there will be other issues.

 

Like what issues? please be very detailed. and how much HP can I get with this combo and adding dyno don headers with a gmmg exhaust?

 

You're totally choking the engine with a stock TPI intake, even if its ported. 24lbs injectors will probably not be enough fuel either. And you'll probably break the T5 transmission if you do any kind of racing.

To work best with a 383, you need short runners such as a TPIS MiniRam or Holley Stealth Ram.

 

The specs on that engine are designed for diesel truck like performance which is fitting with stock TPI. .427" lift cam...not any greater than stock L98 cam. NO idea what the duration is that they use but i'm sure its a RV type 195 to 208 deg duration cam.

heads are very mild not any better than stock either.

So with that said, I think it will fit well with ported stock base, SLP runner combo. 0-4500 rpm range max. Peak in the 3800-4000 rpm range likely. Extreme torque stump puller. Not much hp/probably not much faster than a bolt on L98 with short runner intake

 

Make sure to upgrade the transmition to something more powerful, make sure you have six inches between the alternator and the rest of the engine bay. One thing you MUST do is to change your intake you are going to NEED a new performance intake if you plan on doing the swap. Also if you are going to ad that power if your car is older make sure the rear axle is still in quality condition, check for rust or holes (I had that porblem when i swaped a v6 for a supercharged 350 the power was two much on the rear axle and it dropped because of one rust spot.

 

the corvette forum recommended this engine. alot of them are using 383 with tpi. look i not to racing all the time. just want someting with more hp and for daily cuise. more for show. some where between 330-380hp

 

For what ; tractor pulling?
Smeding's even state it is a engine for towing and 4 x 4 trucks

TPI on that engine will probably make more torque but less Hp than advertised in the link

 

Why is this?

Youll find on forums, in the auto parts store etc many giving advice who have never built anything in their life be careful who you listen to. Reading only gets you so far

 

Tow truck engines seem to be popular....

And yes, 24 lb injectors are too small for that engine if it's going to make any kind of power. They need to be closer to 30 or more.

 

From the sounds of it, it doesnt seem like it's going to be making much more than a stock 350, I would think 24 lbs would be good.. Worked fine for my 350 tpi that made more power than that, just have an afpr

 

I guess, anything over 325HP I would go bigger than 24, and I think he should be over that....

 

If it is actually 345 peak at 4,500 like it shows than yeah it would probably be worth it for bigger injectors, either way I think that the tpi is a great set up for this motor

 

Where did you get this info from? Bad info to me.

 

Well the tranny part he gets from the t-5 not being strong enough. Factory cars did not come with a 350 5 speed because the t-5 was not strong enough to back it, not to mention a 383..

 

I was under the impression 24lb injectors would support 350whp at 80% cycle duty...based on 1989GTATransAm's results

That 383 will not be ANYWHERE near 350whp so 24's should be enough.

 

350 WHP is what? give or take 400-425 at the crank...I'd like to see bigger. That's just me.

I don't see why someone would use a 4 bolt main and build a 383 that isn't more than 400HP...

 

Geeze, that is a truck motor.